Spill evidence · Friends of the Dart

St Lukes Church, Buckfastleigh

Combined sewer overflow · SBB01145 · feeds BUCKFASTLEIGH STW

Wet weather

The discharge

Spill day: Sunday, 16 October 2022
Started: 16 Oct 2022, 16:54
Ended: 16 Oct 2022, 17:18
Duration: 24 minutes
Receiving water: Dean Burn
Parish: Buckfastleigh

Rainfall evidence

Daily rainfall at the matched gauge (Austins Bridge) for the spill day and the days before. A spill is dry when every day in the window is ≤ 0.25 mm.

1-day window: Wet weather3-day window: Wet weather4-day window: Wet weather

Date	Rainfall
16/10/2022 (spill day)	21.9 mm	rain
15/10/2022	3.4 mm	rain
14/10/2022	3 mm	rain
13/10/2022	0.2 mm	dry
12/10/2022	4.6 mm	rain

River flow that day: 6.257 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 1.2 km apart. Closer means the rainfall reading is more representative of the overflow.

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Severity & context

Bathing water: Not Applicable
Shellfish water: Not Applicable
Ahead of the works: No — the works was also overflowing that day.
EA annual return (2022): 20 counted spills · 6 h total
Monitor uptime (2022): 94% operational

Method & provenance. Dry/wet classification is decided by rainfall at the nearest EA gauge — ≤ 0.25 mm on the spill day and each preceding day of the window (how we classify). Spill data: Environment Agency EDM (outlet SBB01145). Rainfall: EA Hydrology gauge fd8ea26c-8052-48c5-a1bb-bbd5ebbbb3d3_364176. A dry spill is precautionary evidence of a likely fault, not proof of an offence — we test the rainfall, not the works' flow. Generated by River Hub.